ViewVC Help
View File | Revision Log | Show Annotations | Download File
/cvs/rxvt-unicode/src/rxvtimg.C
(Generate patch)

Comparing rxvt-unicode/src/rxvtimg.C (file contents):
Revision 1.7 by sf-exg, Sun Jun 3 20:34:25 2012 UTC vs.
Revision 1.61 by sf-exg, Fri Jun 8 10:28:30 2012 UTC

2#include "../config.h" 2#include "../config.h"
3#include "rxvt.h" 3#include "rxvt.h"
4 4
5#if HAVE_IMG 5#if HAVE_IMG
6 6
7#define float_to_component(d) ((d) * 65535.99)
8
9rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height) 7rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int x, int y, int width, int height, int repeat)
10: s(screen), w(width), h(height), format(format), shared(false)
11{
12 pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
13}
14
15rxvt_img::rxvt_img (rxvt_screen *screen, XRenderPictFormat *format, int width, int height, Pixmap pixmap)
16: s(screen), pm(pixmap), w(width), h(height), format(format), shared(false) 8: s(screen), x(x), y(y), w(width), h(height), format(format), repeat(repeat),
9 pm(0), ref(0)
17{ 10{
18} 11}
19 12
20rxvt_img * 13rxvt_img::rxvt_img (const rxvt_img &img)
21rxvt_img::new_from_file (rxvt_screen *s, const char *filename) 14: s(img.s), x(img.x), y(img.y), w(img.w), h(img.h), format(img.format), repeat(img.repeat), pm(img.pm), ref(img.ref)
22{ 15{
23 GError *err; 16 ++ref->cnt;
24 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err); 17}
25 18
26 if (!pb) 19rxvt_img *
20rxvt_img::new_from_root (rxvt_screen *s)
21{
22 Display *dpy = s->display->dpy;
23 unsigned int root_pm_w, root_pm_h;
24 Pixmap root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_XROOTPMAP_ID]);
25 if (root_pixmap == None)
26 root_pixmap = s->display->get_pixmap_property (s->display->xa[XA_ESETROOT_PMAP_ID]);
27
28 if (root_pixmap == None)
29 return 0;
30
31 Window wdummy;
32 int idummy;
33 unsigned int udummy;
34
35 if (!XGetGeometry (dpy, root_pixmap, &wdummy, &idummy, &idummy, &root_pm_w, &root_pm_h, &udummy, &udummy))
27 return 0; 36 return 0;
28 37
29 rxvt_img *img = new rxvt_img ( 38 rxvt_img *img = new rxvt_img (
30 s, 39 s,
31 XRenderFindStandardFormat (s->display->dpy, gdk_pixbuf_get_has_alpha (pb) ? PictStandardARGB32 : PictStandardRGB24), 40 XRenderFindVisualFormat (dpy, DefaultVisual (dpy, s->display->screen)),
32 gdk_pixbuf_get_width (pb), 41 0,
33 gdk_pixbuf_get_height (pb) 42 0,
43 root_pm_w,
44 root_pm_h
34 ); 45 );
35 46
36 img->render (pb, 0, 0, img->w, img->h, 0, 0); 47 img->pm = root_pixmap;
48 img->ref = new pixref (root_pm_w, root_pm_h);
49 img->ref->ours = false;
37 50
51 return img;
52}
53
54rxvt_img *
55rxvt_img::new_from_pixbuf (rxvt_screen *s, GdkPixbuf *pb)
56{
57 Display *dpy = s->display->dpy;
58
59 int width = gdk_pixbuf_get_width (pb);
60 int height = gdk_pixbuf_get_height (pb);
61
62 if (width > 32767 || height > 32767) // well, we *could* upload in chunks
63 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big (maximum size 32768x32768).\n");
64
65 // since we require rgb24/argb32 formats from xrender we assume
66 // that both 24 and 32 bpp MUST be supported by any screen that supports xrender
67 int depth = gdk_pixbuf_get_has_alpha (pb) ? 32 : 24;
68
69 int byte_order = ecb_big_endian () ? MSBFirst : LSBFirst;
70
71 XImage xi;
72
73 xi.width = width;
74 xi.height = height;
75 xi.xoffset = 0;
76 xi.format = ZPixmap;
77 xi.byte_order = ImageByteOrder (dpy);
78 xi.bitmap_unit = 0; //XY only, unused
79 xi.bitmap_bit_order = 0; //XY only, unused
80 xi.bitmap_pad = BitmapPad (dpy);
81 xi.depth = depth;
82 xi.bytes_per_line = 0;
83 xi.bits_per_pixel = 32; //Z only
84 xi.red_mask = 0x00000000; //Z only, unused
85 xi.green_mask = 0x00000000; //Z only, unused
86 xi.blue_mask = 0x00000000; //Z only, unused
87 xi.obdata = 0; // probably unused
88
89 bool byte_order_mismatch = byte_order != xi.byte_order;
90
91 if (!XInitImage (&xi))
92 rxvt_fatal ("unable to initialise ximage, please report.\n");
93
94 if (height > INT_MAX / xi.bytes_per_line)
95 rxvt_fatal ("rxvt_img::new_from_pixbuf: image too big for Xlib.\n");
96
97 xi.data = (char *)rxvt_malloc (height * xi.bytes_per_line);
98
99 int rowstride = gdk_pixbuf_get_rowstride (pb);
100
101 assert (3 + (depth == 32) == gdk_pixbuf_get_n_channels (pb));
102 unsigned char *row = gdk_pixbuf_get_pixels (pb);
103 char *line = xi.data;
104
105 for (int y = 0; y < height; y++)
106 {
107 unsigned char *src = row;
108 uint32_t *dst = (uint32_t *)line;
109
110 if (depth == 24)
111 for (int x = 0; x < width; x++)
112 {
113 uint8_t r = *src++;
114 uint8_t g = *src++;
115 uint8_t b = *src++;
116
117 uint32_t v = (r << 16) | (g << 8) | b;
118
119 if (ecb_big_endian () ? !byte_order_mismatch : byte_order_mismatch)
120 v = ecb_bswap32 (v);
121
122 *dst++ = v;
123 }
124 else
125 for (int x = 0; x < width; x++)
126 {
127 uint32_t v = *(uint32_t *)src; src += 4;
128
129 if (ecb_big_endian ())
130 v = ecb_bswap32 (v);
131
132 v = ecb_rotl32 (v, 8); // abgr to bgra
133
134 if (!byte_order_mismatch)
135 v = ecb_bswap32 (v);
136
137 *dst++ = v;
138 }
139
140 row += rowstride;
141 line += xi.bytes_per_line;
142 }
143
144 rxvt_img *img = new rxvt_img (s, XRenderFindStandardFormat (dpy, depth == 24 ? PictStandardRGB24 : PictStandardARGB32), 0, 0, width, height);
145 img->alloc ();
146
147 GC gc = XCreateGC (dpy, img->pm, 0, 0);
148 XPutImage (dpy, img->pm, gc, &xi, 0, 0, 0, 0, width, height);
149 XFreeGC (dpy, gc);
150
151 free (xi.data);
152
153 return img;
154}
155
156rxvt_img *
157rxvt_img::new_from_file (rxvt_screen *s, const char *filename)
158{
159 GError *err = 0;
160 GdkPixbuf *pb = gdk_pixbuf_new_from_file (filename, &err);
161
162 if (!pb)
163 rxvt_fatal ("rxvt_img::new_from_file: %s\n", err->message);
164
165 rxvt_img *img = new_from_pixbuf (s, pb);
166
167 g_object_unref (pb);
168
169 return img;
170}
171
172void
173rxvt_img::destroy ()
174{
175 if (--ref->cnt)
38 return img; 176 return;
177
178 if (pm && ref->ours)
179 XFreePixmap (s->display->dpy, pm);
180
181 delete ref;
39} 182}
40 183
41rxvt_img::~rxvt_img () 184rxvt_img::~rxvt_img ()
42{ 185{
43 if (!shared) 186 destroy ();
187}
188
189void
190rxvt_img::alloc ()
191{
192 pm = XCreatePixmap (s->display->dpy, s->display->root, w, h, format->depth);
193 ref = new pixref (w, h);
194}
195
196Picture
197rxvt_img::src_picture ()
198{
199 Display *dpy = s->display->dpy;
200
201 XRenderPictureAttributes pa;
202 pa.repeat = repeat;
203 Picture pic = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
204
205 return pic;
206}
207
208void
209rxvt_img::unshare ()
210{
211 if (ref->cnt == 1 && ref->ours)
212 return;
213
214 //TODO: maybe should reify instead
215 Pixmap pm2 = XCreatePixmap (s->display->dpy, s->display->root, ref->w, ref->h, format->depth);
216 GC gc = XCreateGC (s->display->dpy, pm, 0, 0);
217 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, ref->w, ref->h, 0, 0);
44 XFreePixmap (s->display->dpy, pm); 218 XFreeGC (s->display->dpy, gc);
219
220 destroy ();
221
222 pm = pm2;
223 ref = new pixref (ref->w, ref->h);
45} 224}
46 225
47void 226void
48rxvt_img::fill (const rxvt_color &c) 227rxvt_img::fill (const rxvt_color &c)
49{ 228{
73 252
74 for (int i = 0; i < width; i++) 253 for (int i = 0; i < width; i++)
75 params[i+2] = XDoubleToFixed (kernel[i] / sum); 254 params[i+2] = XDoubleToFixed (kernel[i] / sum);
76} 255}
77 256
78void 257rxvt_img *
79rxvt_img::blur (int rh, int rv) 258rxvt_img::blur (int rh, int rv)
80{ 259{
81 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV)) 260 if (!(s->display->flags & DISPLAY_HAS_RENDER_CONV))
82 return; 261 return clone ();
83 262
84 Display *dpy = s->display->dpy; 263 Display *dpy = s->display->dpy;
85 int size = max (rh, rv) * 2 + 1; 264 int size = max (rh, rv) * 2 + 1;
86 double *kernel = (double *)malloc (size * sizeof (double)); 265 double *kernel = (double *)malloc (size * sizeof (double));
87 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed)); 266 XFixed *params = (XFixed *)malloc ((size + 2) * sizeof (XFixed));
267 rxvt_img *img = new rxvt_img (s, format, x, y, w, h, repeat);
268 img->alloc ();
88 269
89 XRenderPictureAttributes pa; 270 XRenderPictureAttributes pa;
90
91 pa.repeat = RepeatPad; 271 pa.repeat = RepeatPad;
92 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa); 272 Picture src = XRenderCreatePicture (dpy, pm, format, CPRepeat, &pa);
273 Picture dst = XRenderCreatePicture (dpy, img->pm, format, 0, 0);
274
93 Pixmap tmp = XCreatePixmap (dpy, pm, w, h, format->depth); 275 Pixmap tmp_pm = XCreatePixmap (dpy, pm, w, h, format->depth);
94 Picture dst = XRenderCreatePicture (dpy, tmp, format, CPRepeat, &pa); 276 Picture tmp = XRenderCreatePicture (dpy, tmp_pm , format, CPRepeat, &pa);
95 XFreePixmap (dpy, tmp); 277 XFreePixmap (dpy, tmp_pm);
96 278
97 if (kernel && params) 279 if (kernel && params)
98 { 280 {
99 size = rh * 2 + 1; 281 size = rh * 2 + 1;
100 get_gaussian_kernel (rh, size, kernel, params); 282 get_gaussian_kernel (rh, size, kernel, params);
102 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); 284 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2);
103 XRenderComposite (dpy, 285 XRenderComposite (dpy,
104 PictOpSrc, 286 PictOpSrc,
105 src, 287 src,
106 None, 288 None,
107 dst, 289 tmp,
108 0, 0, 290 0, 0,
109 0, 0, 291 0, 0,
110 0, 0, 292 0, 0,
111 w, h); 293 w, h);
112 294
113 ::swap (src, dst);
114
115 size = rv * 2 + 1; 295 size = rv * 2 + 1;
116 get_gaussian_kernel (rv, size, kernel, params); 296 get_gaussian_kernel (rv, size, kernel, params);
117 ::swap (params[0], params[1]); 297 ::swap (params[0], params[1]);
118 298
119 XRenderSetPictureFilter (dpy, src, FilterConvolution, params, size+2); 299 XRenderSetPictureFilter (dpy, tmp, FilterConvolution, params, size+2);
120 XRenderComposite (dpy, 300 XRenderComposite (dpy,
121 PictOpSrc, 301 PictOpSrc,
122 src, 302 tmp,
123 None, 303 None,
124 dst, 304 dst,
125 0, 0, 305 0, 0,
126 0, 0, 306 0, 0,
127 0, 0, 307 0, 0,
130 310
131 free (kernel); 311 free (kernel);
132 free (params); 312 free (params);
133 XRenderFreePicture (dpy, src); 313 XRenderFreePicture (dpy, src);
134 XRenderFreePicture (dpy, dst); 314 XRenderFreePicture (dpy, dst);
315 XRenderFreePicture (dpy, tmp);
316
317 return img;
135} 318}
136 319
137static Picture 320static Picture
138create_xrender_mask (Display *dpy, Drawable drawable, Bool argb) 321create_xrender_mask (Display *dpy, Drawable drawable, Bool argb)
139{ 322{
148 331
149 return mask; 332 return mask;
150} 333}
151 334
152void 335void
153rxvt_img::brightness (double r, double g, double b, double a) 336rxvt_img::brightness (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
154{ 337{
155 Display *dpy = s->display->dpy; 338 Display *dpy = s->display->dpy;
156 Picture src = create_xrender_mask (dpy, pm, True); 339 Picture src = create_xrender_mask (dpy, pm, True);
157 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 340 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
158 341
159 XRenderColor mask_c; 342 XRenderColor mask_c;
160 mask_c.red = float_to_component (r); 343 mask_c.red = r;
161 mask_c.green = float_to_component (g); 344 mask_c.green = g;
162 mask_c.blue = float_to_component (b); 345 mask_c.blue = b;
163 mask_c.alpha = float_to_component (a); 346 mask_c.alpha = a;
164 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); 347 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
165 348
166 XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 349 XRenderComposite (dpy, PictOpAdd, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
350
351 XRenderFreePicture (dpy, src);
352 XRenderFreePicture (dpy, dst);
167} 353}
168 354
169void 355void
170rxvt_img::contrast (double r, double g, double b, double a) 356rxvt_img::contrast (unsigned short r, unsigned short g, unsigned short b, unsigned short a)
171{ 357{
172 if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL)) 358 if (!(s->display->flags & DISPLAY_HAS_RENDER_MUL))
173 return; 359 return;
174 360
175 Display *dpy = s->display->dpy; 361 Display *dpy = s->display->dpy;
176 Picture src = create_xrender_mask (dpy, pm, True); 362 Picture src = create_xrender_mask (dpy, pm, True);
177 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0); 363 Picture dst = XRenderCreatePicture (dpy, pm, format, 0, 0);
178 364
179 XRenderColor mask_c; 365 XRenderColor mask_c;
180 mask_c.red = float_to_component (r); 366 mask_c.red = r;
181 mask_c.green = float_to_component (g); 367 mask_c.green = g;
182 mask_c.blue = float_to_component (b); 368 mask_c.blue = b;
183 mask_c.alpha = float_to_component (a); 369 mask_c.alpha = a;
184 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1); 370 XRenderFillRectangle (dpy, PictOpSrc, src, &mask_c, 0, 0, 1, 1);
185 371
186 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 372 XRenderComposite (dpy, PictOpMultiply, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
187}
188 373
189void 374 XRenderFreePicture (dpy, src);
190rxvt_img::render (GdkPixbuf *pixbuf, int src_x, int src_y, int width, int height, int dst_x, int dst_y) 375 XRenderFreePicture (dpy, dst);
191{
192 //TODO
193} 376}
194 377
195rxvt_img * 378rxvt_img *
196rxvt_img::copy () 379rxvt_img::clone ()
197{ 380{
198 GC gc = XCreateGC (s->display->dpy, pm, 0, 0); 381 return new rxvt_img (*this);
199 Pixmap pm2 = XCreatePixmap (s->display->dpy, pm, w, h, format->depth);
200 XCopyArea (s->display->dpy, pm, pm2, gc, 0, 0, w, h, 0, 0);
201 XFreeGC (s->display->dpy, gc);
202 return new rxvt_img (s, format, w, h, pm2);
203} 382}
204 383
384static XRenderPictFormat *
385find_alpha_format_for (Display *dpy, XRenderPictFormat *format)
386{
387 if (format->direct.alphaMask)
388 return format; // already has alpha
389
390 // try to find a suitable alpha format, one bit alpha is enough for our purposes
391 if (format->type == PictTypeDirect)
392 for (int n = 0; XRenderPictFormat *f = XRenderFindFormat (dpy, 0, 0, n); ++n)
393 if (f->direct.alphaMask
394 && f->type == PictTypeDirect
395 && ecb_popcount32 (f->direct.redMask ) >= ecb_popcount32 (format->direct.redMask )
396 && ecb_popcount32 (f->direct.greenMask) >= ecb_popcount32 (format->direct.greenMask)
397 && ecb_popcount32 (f->direct.blueMask ) >= ecb_popcount32 (format->direct.blueMask ))
398 return f;
399
400 // should be a very good fallback
401 return XRenderFindStandardFormat (dpy, PictStandardARGB32);
402}
403
205rxvt_img * 404rxvt_img *
405rxvt_img::reify ()
406{
407 if (x == 0 && y == 0 && w == ref->w && h == ref->h)
408 return clone ();
409
410 Display *dpy = s->display->dpy;
411
412 bool alpha = !format->direct.alphaMask
413 && (x || y)
414 && repeat == RepeatNone;
415
416 rxvt_img *img = new rxvt_img (s, alpha ? find_alpha_format_for (dpy, format) : format, 0, 0, w, h, repeat);
417 img->alloc ();
418
419 Picture src = src_picture ();
420 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
421
422 if (alpha)
423 {
424 XRenderColor rc = { 0, 0, 0, 0 };
425 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);//TODO: split into four fillrectangles
426 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, -x, -y, ref->w, ref->h);
427 }
428 else
429 XRenderComposite (dpy, PictOpSrc, src, None, dst, x, y, 0, 0, 0, 0, w, h);
430
431 XRenderFreePicture (dpy, src);
432 XRenderFreePicture (dpy, dst);
433
434 return img;
435}
436
437rxvt_img *
438rxvt_img::sub_rect (int x, int y, int width, int height)
439{
440 rxvt_img *img = clone ();
441
442 img->x += x;
443 img->y += y;
444
445 if (w != width || h != height)
446 {
447 img->w = width;
448 img->h = height;
449
450 rxvt_img *img2 = img->reify ();
451 delete img;
452 img = img2;
453 }
454
455 return img;
456}
457
458rxvt_img *
206rxvt_img::transform (int new_width, int new_height, double matrix[16]) 459rxvt_img::transform (int new_width, int new_height, double matrix[9])
207{ 460{
208 //TODO 461 rxvt_img *img = new rxvt_img (s, format, 0, 0, new_width, new_height, repeat);
462 img->alloc ();
463
464 Display *dpy = s->display->dpy;
465 Picture src = src_picture ();
466 Picture dst = XRenderCreatePicture (dpy, img->pm, img->format, 0, 0);
467
468 XTransform xfrm;
469
470 for (int i = 0; i < 3; ++i)
471 for (int j = 0; j < 3; ++j)
472 xfrm.matrix [i][j] = XDoubleToFixed (matrix [i * 3 + j]);
473
474#if 0
475 xfrm.matrix [0][2] -= XDoubleToFixed (x);//TODO
476 xfrm.matrix [1][2] -= XDoubleToFixed (y);
477#endif
478
479 XRenderSetPictureFilter (dpy, src, "good", 0, 0);
480 XRenderSetPictureTransform (dpy, src, &xfrm);
481 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, new_width, new_height);
482
483 XRenderFreePicture (dpy, src);
484 XRenderFreePicture (dpy, dst);
485
486 return img;
209} 487}
210 488
211rxvt_img * 489rxvt_img *
212rxvt_img::scale (int new_width, int new_height) 490rxvt_img::scale (int new_width, int new_height)
213{ 491{
214 // use transform 492 if (w == new_width && h == new_height)
215 //TODO 493 return clone ();
216}
217 494
495 double matrix[9] = {
496 w / (double)new_width, 0, 0,
497 0, h / (double)new_height, 0,
498 0, 0, 1
499 };
500
501 int old_repeat_mode = repeat;
502 repeat = RepeatPad; // not right, but xrender can't proeprly scale it seems
503
504 rxvt_img *img = transform (new_width, new_height, matrix);
505
506 repeat = old_repeat_mode;
507 img->repeat = repeat;
508
509 return img;
510}
511
218rxvt_img * 512rxvt_img *
513rxvt_img::rotate (int new_width, int new_height, int x, int y, double phi)
514{
515 double s = sin (phi);
516 double c = cos (phi);
517
518 double matrix[9] = {
519 c, -s, -c * x + s * y + x,
520 s, c, -s * x - c * y + y,
521 0, 0, 1
522 };
523
524 return transform (new_width, new_height, matrix);
525}
526
527rxvt_img *
219rxvt_img::convert_to (XRenderPictFormat *new_format) 528rxvt_img::convert_format (XRenderPictFormat *new_format, const rxvt_color &bg)
220{ 529{
530 if (new_format == format)
531 return clone ();
532
533 rxvt_img *img = new rxvt_img (s, new_format, x, y, w, h, repeat);
534 img->alloc ();
535
221 Display *dpy = s->display->dpy; 536 Display *dpy = s->display->dpy;
222 Pixmap new_pm = XCreatePixmap (dpy, pm, w, h, new_format->depth); 537 Picture src = src_picture ();
223 Picture src = XRenderCreatePicture (dpy, pm, format, 0, 0);
224 Picture dst = XRenderCreatePicture (dpy, new_pm, new_format, 0, 0); 538 Picture dst = XRenderCreatePicture (dpy, img->pm, new_format, 0, 0);
539 int op = PictOpSrc;
225 540
541 if (format->direct.alphaMask && !new_format->direct.alphaMask)
542 {
543 // does it have to be that complicated
544 rgba c;
545 bg.get (c);
546
547 XRenderColor rc = { c.r, c.g, c.b, 0xffff };
548 XRenderFillRectangle (dpy, PictOpSrc, dst, &rc, 0, 0, w, h);
549
550 op = PictOpOver;
551 }
552
226 XRenderComposite (dpy, PictOpSrc, src, None, dst, 0, 0, 0, 0, 0, 0, w, h); 553 XRenderComposite (dpy, op, src, None, dst, 0, 0, 0, 0, 0, 0, w, h);
227 554
228 XRenderFreePicture (dpy, src);
229 XRenderFreePicture (dpy, dst); 555 XRenderFreePicture (dpy, src);
556 XRenderFreePicture (dpy, dst);
230 557
231 rxvt_img *img = new rxvt_img ( 558 return img;
232 s, 559}
233 new_format,
234 w,
235 h,
236 new_pm
237 );
238 560
561rxvt_img *
562rxvt_img::blend (rxvt_img *img, double factor)
563{
564 rxvt_img *img2 = clone ();
565 Display *dpy = s->display->dpy;
566 Picture src = img->src_picture ();
567 Picture dst = XRenderCreatePicture (dpy, img2->pm, img2->format, 0, 0);
568 Picture mask = create_xrender_mask (dpy, img->pm, False);
569
570 XRenderColor mask_c;
571
572 mask_c.alpha = float_to_component (factor);
573 mask_c.red =
574 mask_c.green =
575 mask_c.blue = 0;
576 XRenderFillRectangle (dpy, PictOpSrc, mask, &mask_c, 0, 0, 1, 1);
577
578 XRenderComposite (dpy, PictOpOver, src, mask, dst, 0, 0, 0, 0, 0, 0, w, h);
579
580 XRenderFreePicture (dpy, src);
581 XRenderFreePicture (dpy, dst);
582 XRenderFreePicture (dpy, mask);
583
239 return img; 584 return img2;
240} 585}
241 586
242#endif 587#endif
243 588

Diff Legend

Removed lines
+ Added lines
< Changed lines
> Changed lines